Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International



Home > Press > Toxic nanoparticles might be entering human food supply: Scientists develop new way to detect threatening nanoparticles in food

Following a new study at the University of Missouri, a reliable method of testing foods for the harmful particles has been found that might be implemented in the future.

Credit: University of Missouri
Following a new study at the University of Missouri, a reliable method of testing foods for the harmful particles has been found that might be implemented in the future.

Credit: University of Missouri

Abstract:
Over the last few years, the use of nanomaterials for water treatment, food packaging, pesticides, cosmetics and other industries has increased. For example, farmers have used silver nanoparticles as a pesticide because of their capability to suppress the growth of harmful organisms. However, a growing concern is that these particles could pose a potential health risk to humans and the environment. In a new study, researchers at the University of Missouri have developed a reliable method for detecting silver nanoparticles in fresh produce and other food products.

Toxic nanoparticles might be entering human food supply: Scientists develop new way to detect threatening nanoparticles in food

Columbia, MO | Posted on August 22nd, 2013

"More than 1,000 products on the market are nanotechnology-based products," said Mengshi Lin, associate professor of food science in the MU College of Agriculture, Food and Natural Resources. "This is a concern because we do not know the toxicity of the nanoparticles. Our goal is to detect, identify and quantify these nanoparticles in food and food products and study their toxicity as soon as possible."

Lin and his colleagues, including MU scientists Azlin Mustapha and Bongkosh Vardhanabhuti, studied the residue and penetration of silver nanoparticles on pear skin. First, the scientists immersed the pears in a silver nanoparticle solution similar to pesticide application. The pears were then washed and rinsed repeatedly. Results showed that four days after the treatment and rinsing, silver nanoparticles were still attached to the skin, and the smaller particles were able to penetrate the skin and reach the pear pulp.

"The penetration of silver nanoparticles is dangerous to consumers because they have the ability to relocate in the human body after digestion," Lin said. "Therefore, smaller nanoparticles may be more harmful to consumers than larger counterparts."

When ingested, nanoparticles pass into the blood and lymph system, circulate through the body and reach potentially sensitive sites such as the spleen, brain, liver and heart.

The growing trend to use other types of nanoparticles has revolutionized the food industry by enhancing flavors, improving supplement delivery, keeping food fresh longer and brightening the colors of food. However, researchers worry that the use of silver nanoparticles could harm the human body.

"This study provides a promising approach for detecting the contamination of silver nanoparticles in food crops or other agricultural products," Lin said.

Members of Lin's research team also included Zhong Zang, a food science graduate student. The study was published in the Journal of Agricultural and Food Chemistry.

####

For more information, please click here

Contacts:
Christian Basi

573-882-4430

Copyright © University of Missouri-Columbia

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Stability of perovskite solar cells reaches next milestone January 27th, 2023

Qubits on strong stimulants: Researchers find ways to improve the storage time of quantum information in a spin rich material January 27th, 2023

UCF researcher receives Samsung International Global Research Outreach Award: The award from the multinational electronics corporation will fund the development of infrared night vision and thermal sensing camera technology for cell phones and consumer electronics January 27th, 2023

Temperature-sensing building material changes color to save energy January 27th, 2023

Discoveries

One of the causes of aggressive liver cancer discovered: a 'molecular staple' that helps repair broken: DNA Researchers describe a new DNA repair mechanism that hinders cancer treatment January 27th, 2023

Stability of perovskite solar cells reaches next milestone January 27th, 2023

Qubits on strong stimulants: Researchers find ways to improve the storage time of quantum information in a spin rich material January 27th, 2023

Temperature-sensing building material changes color to save energy January 27th, 2023

Announcements

UCF researcher receives Samsung International Global Research Outreach Award: The award from the multinational electronics corporation will fund the development of infrared night vision and thermal sensing camera technology for cell phones and consumer electronics January 27th, 2023

Temperature-sensing building material changes color to save energy January 27th, 2023

Quantum sensors see Weyl photocurrents flow: Boston College-led team develops new quantum sensor technique to image and understand the origin of photocurrent flow in Weyl semimetals January 27th, 2023

Department of Energy announces $9.1 million for research on quantum information science and nuclear physics: Projects span the development of quantum computing, algorithms, simulators, superconducting qubits, and quantum sensors for advancing nuclear physics January 27th, 2023

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers/Posters

Qubits on strong stimulants: Researchers find ways to improve the storage time of quantum information in a spin rich material January 27th, 2023

Temperature-sensing building material changes color to save energy January 27th, 2023

Quantum sensors see Weyl photocurrents flow: Boston College-led team develops new quantum sensor technique to image and understand the origin of photocurrent flow in Weyl semimetals January 27th, 2023

Danish quantum physicists make nanoscopic advance of colossal significance January 27th, 2023

Food/Agriculture/Supplements

Manufacturing advances bring material back in vogue January 20th, 2023

Scientists offer solutions for risky tap water June 17th, 2022

Polymer fibers with graphene nanotubes make it possible to heat hard-to-reach, complex-shaped items February 11th, 2022

Unprecedented view of a single catalyst nanoparticle at work: X-rays reveal compositional changes on active surface under reaction conditions October 1st, 2021

Safety-Nanoparticles/Risk management

Underwater movement sensor alerts when a swimmer might be drowning October 7th, 2022

New protocol for assessing the safety of nanomaterials July 1st, 2022

Nylon cooking bags, plastic-lined cups can release nanoparticles into liquids April 22nd, 2022

Good for groundwater bad for crops? Plastic particles release pollutants in upper soil layers: The environmental geoscientists at the Centre for Microbiology and Environmental Systems Science (CMESS) focused on a variety of parameters that contribute to plastic pollution in far September 17th, 2021

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project